Google calendar

Google calendar daily sends me an e-mail that lists my agenda for the day, including an entry such as this: "All day, Thu Dec 25, Tasks for Thursday (Dec 25), Toodledo" (displayed in one line, as are the other items on my agenda for the day). None of my Toodledo to-do's for the day, though, are listed in the e-mail or when I click on this entry. Is there a setting I've missed? How can I get my Toodledo entries to display in my Gmail daily agenda e-mail?